<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>index</title>
</head>
<body>
<h1>index</h1>
<a th:href="@{/a}">page a</a><br>
<a th:href="@{/b}">page b</a><br>

</body>
</html>